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Automate video creation from voice input with HeyGen, GPT-5 & social publishing

Dr. FirasDr. Firas
2537 views
2/3/2026
Google SheetsHubSpotOpenAIAutomationData Enrichment
Official Page

This workflow contains community nodes that are only compatible with the self-hosted version of n8n.

Workflow Screenshot

Automate Video Creation from Voice Input with HeyGen & n8n

👥 Who is this for?

This workflow is ideal for:

  • Content creators who want to turn ideas into videos in minutes
  • Marketers managing multi-platform video campaigns
  • Agencies needing scalable video workflows for multiple clients
  • Entrepreneurs looking to automate social media presence

💡 What problem is this workflow solving?

Creating and publishing videos across TikTok, YouTube, Instagram and more is:

  • Time-consuming (writing scripts, creating videos, uploading manually)
  • Inconsistent (different platforms, formats, captions)
  • Hard to scale without automation

This workflow solves it by turning a voice note into a complete AI video — scripted, generated, and published automatically.

⚙️ What this workflow does

  1. Capture idea via Telegram voice note
  2. Transcribe audio to text using OpenAI Whisper
  3. Generate script, title, and caption with GPT-5
  4. Create avatar video with HeyGen based on your script
  5. Save final video to Google Drive and log metadata in Google Sheets
  6. Upload video to Blotato
  7. Auto-publish to 9 platforms (TikTok, YouTube Shorts, Instagram, LinkedIn, Facebook, Twitter (X), Threads, Bluesky, Pinterest)
  8. Send Telegram notification once published

🧰 Setup

Before you start, you’ll need:

  1. ✅ A Telegram Bot connected to n8n
  2. 🔑 An OpenAI API key (Whisper + GPT-5)
  3. 🎭 A HeyGen API key for avatar video generation
  4. 📂 Google Drive + Sheets integrations for storage & logs
  5. 🧩 A Blotato Pro account with API access enabled
  6. 📦 Verified Community Nodes enabled in n8n Admin Panel
  7. ⚙️ Blotato node installed + credentials configured
  8. 📄 A Google Sheet template to log titles, captions, and video links

🛠️ How to customize this workflow

  • Change prompts → Adjust GPT-5 prompts to fit your tone or brand
  • Select avatars → Configure HeyGen avatar and voice to match your style
  • Choose platforms → Activate only TikTok, YouTube, Instagram, etc.
  • Add approvals → Insert a Telegram or Slack approval step before publishing
  • Extend reporting → Push analytics or engagement data into Sheets or Notion

This workflow transforms a simple voice message into a ready-to-publish viral video — fully automated, consistent, and scalable.

📄 Documentation: Notion Guide

Need help customizing?

Contact me for consulting and support : Linkedin / Youtube

Automated Video Creation from Voice Input with HeyGen, GPT-5, and Social Publishing

This n8n workflow automates the process of generating video content from voice input, leveraging AI for script generation and video creation, and then publishing the content to social media. It integrates with Telegram for input, OpenAI for script refinement, HeyGen for video production, Google Drive for storage, and Google Sheets for tracking.

What it does

  1. Listens for Voice Input: Triggers when a new voice message is received via Telegram.
  2. Transcribes Voice to Text: Uses OpenAI's Whisper API to transcribe the received voice message into text.
  3. Generates Video Script: Employs an OpenAI Chat Model (GPT-5 equivalent) to refine the transcribed text into a suitable video script.
  4. Creates Video with HeyGen: Sends the generated script to HeyGen to produce a video with a selected avatar and voice.
  5. Uploads Video to Google Drive: Stores the generated video file in a specified Google Drive folder.
  6. Tracks Video Details in Google Sheets: Records the video details (script, URL, status) in a Google Sheet.
  7. Publishes to Social Media (Optional/Manual Review):
    • Sends the video URL to Telegram for review.
    • Waits for a confirmation/rejection from Telegram.
    • If approved, it updates the Google Sheet with the approval status.
    • (Further social media publishing nodes would typically follow the approval, but are not explicitly defined in this JSON).

Prerequisites/Requirements

  • n8n Instance: A running n8n instance.
  • Telegram Bot: A Telegram bot configured to receive messages and send notifications.
  • OpenAI API Key: For voice transcription (Whisper) and script generation (GPT-5 equivalent).
  • HeyGen Account: For video generation.
  • Google Drive Account: For storing generated videos.
  • Google Sheets Account: For tracking video data.

Setup/Usage

  1. Import the workflow: Import the provided JSON into your n8n instance.
  2. Configure Credentials:
    • Telegram: Set up a Telegram Trigger and Telegram node credentials with your bot token.
    • OpenAI: Configure OpenAI credentials with your API key for both the OpenAI and OpenAI Chat Model nodes.
    • HeyGen: Configure HTTP Request nodes with your HeyGen API key and endpoints.
    • Google Drive: Set up Google Drive credentials.
    • Google Sheets: Set up Google Sheets credentials.
  3. Customize Nodes:
    • Telegram Trigger: Ensure it's listening to the correct chat ID/updates.
    • OpenAI (Whisper): Verify the model and any specific transcription parameters.
    • OpenAI Chat Model (GPT-5): Adjust the prompt for script generation to fit your video style and requirements.
    • HTTP Request (HeyGen): Update the HeyGen API endpoint, avatar ID, voice ID, and other video creation parameters as needed.
    • Google Drive: Specify the target folder ID for video uploads.
    • Google Sheets: Specify the Spreadsheet ID and Sheet Name for tracking.
    • Telegram (Approval): Customize the approval message and ensure the If node correctly parses the approval response.
  4. Activate the workflow: Once configured, activate the workflow to start processing voice inputs.
  5. Send a voice message to your Telegram bot to trigger the workflow.
  6. Monitor Telegram for approval requests and respond accordingly to proceed with social publishing (if implemented).

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